Finding the Fourth Proportional to 4,926.56, 7,390.96 and 1,640.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,926.56 : 7,390.96 = 1,640.72 : x
2. Step 2: Convert to fraction form
   4,926.56/7,390.96 = 1,640.72/x
3. Step 3: Cross multiply
   4,926.56x = 7,390.96 × 1,640.72
4. Step 4: Simplify right side
   4,926.56x = 12,126,495.89
5. Step 5: Solve for x
   x = 12,126,495.89/4,926.56
6. Step 6: Final answer
   x = 2,461.45